The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 1998
Filed:
May. 02, 1997
Applicant:
Inventor:
Ralph P Stodd, Dayton, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72329 ; 72348 ;
Abstract
A food can end or shell is formed from a thin metal sheet by blanking a circular disk from the sheet, gripping a peripheral portion of the disk, pressing a center portion of the disk upwardly relative to the peripheral portion, and forming upwardly projecting concentric beads within an annular portion of the disk. Thereafter, an annular chuck wall, countersink and crown portion are formed within the disk around the concentric beads. A downwardly projecting annular bead is formed within the bottom wall of the countersink and cooperates to resist buckling of the shell.